Exercise machine



FIG. 1 is a front elevational view of an exercise machine;

FIG. 2 is a right side view taken from FIG. 1;

FIG. 3 is a left side view taken from FIG. 1;

FIG. 4 is a top view taken from FIG. 1;

FIG. 5 is a bottom view thereof;

FIG. 6 is a rear elevational view taken from FIG. 1;

FIG. 7 is a top view of the exercise machine in a compact collapsed configuration;

FIG. 8 is a bottom view thereof;

FIG. 9 is a front elevational view taken from FIG. 7;

FIG. 10 is a rear elevational view thereof;

FIG. 11 is a right side view taken from FIG. 9; and,

FIG. 12 is a left side view taken from FIG. 9. 

The ornamental design for an exercise machine, as shown. 